Auditory Prosthesis Button Force Distribution and Feedback Control
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Solution Overview
Problem
Auditory prostheses often experience feedback and distortion due to improper button pressing, which can damage internal components and reduce therapy efficiency, as the forces applied to the button are not evenly distributed and can twist the housing of the device.
Innovation Solution
Aligning the button with the shaft and bone anchor to evenly distribute forces, using a flexible element or seal to reduce feedback, and incorporating dampers in the button structure to further dampen vibrations and prevent distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the button is positioned on the prosthesis housing, then the recipient can operate the device, but the forces applied to the button can twist the housing and damage internal components
Solution Approach 1:
A flexible membrane is introduced as an intermediary element between the button and the prosthesis housing. When the recipient presses the button, the force is transmitted through this compliant membrane rather than directly to the rigid housing, preventing twisting moments and protecting internal components while maintaining operational functionality
Solution Approach 2:
The mechanical properties of the button structure are changed by incorporating a flexible membrane with specific compliance characteristics. This allows the button to deform under pressure, absorbing the applied forces through elastic deformation rather than transmitting rigid forces to the housing, thus preventing damage
2Stability of the object's composition
If the button is rigidly connected to the housing, then the button structure is stable, but feedback and distortion occur when pressing the button
Solution Approach 1:
A flexible membrane is used to replace the rigid button structure. This thin film element provides the necessary stability for button operation while its flexibility allows it to deform under pressure, preventing the transmission of vibration feedback and distortion to the housing and internal components
Solution Approach 2:
The flexible membrane acts as a pre-configured cushioning element that absorbs and dampens the forces applied during button pressing. This beforehand cushioning prevents the generation of feedback and distortion by accommodating the mechanical stress before it can propagate through the housing structure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces feedback and distortion, prevents damage to internal components, and maintains therapy efficiency by ensuring even force distribution and minimizing moment forces on the prosthesis.
Implementation Method 1
the button can be connected to the prosthesis housing with a flexible element or seal. The seal acts as a soft mute function when the button is pressed, reducing the risk of feedback
Implementation Method 2
Additional dampers can be incorporated into the button structure to further dampen feedback transmitted to components such as the microphone
Data Source
AI summary
A button on an auditory prosthesis is aligned with a shaft and a bone anchor of the prosthesis. Forces resulting from pressing of the button are evenly distributed towards the anchor, which prevents damage to the prosthesis. The button can be connected to the prosthesis housing with a flexible element or seal, which acts as a soft mute function when the button is pressed, further reducing the risk of feedback. Dampers can be incorporated into the button structure to further dampen feedback that can be transmitted to other components of the auditory prosthesis.